Millimeter of mercury. A millimeter of mercury is a manometric unit of pressure, formerly defined as the extra pressure generated by a column of mercury one millimetre high and now defined as precisely 7002133322387415000â 133.322387415 pascals. It is denoted by the symbol mmHg. Although not an SI unit, the millimeter of mercury is still routinely used in medicine, meteorology, aviation, and many other scientific fields. One millimeter of mercury is approximately 1 torr, which is 1/760 of standard atmospheric ...
Vitrectomy is when the eye surgeon removes the vitreous from the inside of the eye. Pars plana vitrectomy is a general term for a group of operations on the deeper part of the eye, all of which involve the removal of some or all of the vitreous â the eyeâs clear internal jelly. Pars plana vitrectomy eye surgery is sometimes done to remove eye floaters or vitreous hemorrhage inside the eyeball. In a vitrectomy, the surgeon âvacuumsâ out the normally clear, jelly-like fluid that fills the inside of the eye, the vitreous humor, with a surgical instrument called a vitrector. The vitrectomy procedure
A vitrectomy is an operation to remove the vitreous gel from the inside of the eye. This is necessary in order to carry out procedures that cannot be performed with the fluid in its place. The vitreous is a clear jelly-like substance which occupies about two-thirds of the eye, lying between the lens and the retina.erious injury to the eye may also result in a vitreous haemorrhage. Primary retinal detachment repair: to learn about why a vitrectomy is required for a retinal detachment click here (link). Diabetic retinopathy: to learn about why a vitrectomy is required for diabetic retinopathy click here (link).